| Morgantown to Orbetello | 4,506.88 mi (7,253.13 km) |
| Morgantown to Oria | 4,857.38 mi (7,817.19 km) |
| Morgantown to Oristano | 4,483.60 mi (7,215.65 km) |
| Morgantown to Orta Nova | 4,742.30 mi (7,631.99 km) |
| Morgantown to Orte | 4,556.69 mi (7,333.28 km) |
| Morgantown to Ortona | 4,646.91 mi (7,478.48 km) |
| Morgantown to Orvieto | 4,535.28 mi (7,298.83 km) |
| Morgantown to Orzinuovi | 4,346.77 mi (6,995.45 km) |
| Morgantown to Osimo | 4,565.23 mi (7,347.02 km) |
| Morgantown to Ospitaletto | 4,347.25 mi (6,996.23 km) |
| Morgantown to Ostuni | 4,845.82 mi (7,798.60 km) |
| Morgantown to Ottaviano | 4,708.05 mi (7,576.88 km) |
| Morgantown to Ovada | 4,318.56 mi (6,950.05 km) |
| Morgantown to Ozieri | 4,477.39 mi (7,205.66 km) |
| Morgantown to Paceco | 4,734.30 mi (7,619.12 km) |
